Self-propelled car-truck.



PATENTED'JAN. 22, 1907.

J. K. OOOHRAN. SELF PROPELLED CAR TRUCK.

APPLICATION FILED AUG. 9, 1906.

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aftozumg Q/vitMQZ/OZZ PATENTED JAN. 22, 190?.

J. K. COGHRAN. SELF PROPBLLED GAR TRUCK.

APPLICATION FILED AUG. 9,1906.

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attain an wi/lw wooe f PATENTED JAN. 22,1907.

J. K. COOHRAN. SELF PROPELLED' CAR TRUCK. APPLICATION FILED AUG. 9, 190B.

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llllll llll PATENTED JAN. 22, 1907.

J. K. GOCHRAN. SELF PROPELLED OAR TRUCK.

APPLICATION FILED AUG. 9, 1906.

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wumm a I citizen of the wherein the motor,

view on the line 4 4 of Fi STATES.

PATENT JAMES K. OoCHRA-N, OF CHICAGO, ILLINOIS/.1

.SELF-PROYPELLED CA -T UCK;

'l'oaili whom it may concern,-

Be it known that I, JAMES K. COOHRAN, a

United States; residing at Chicago, in the county of nols, have invented anew and-useful Self- Propelled Car-Truck, of'which the following isa specification.

This invention relates more particularly to improvements in self-propelled trucks for rm way-cars.

One of the principal objects of the present invention is to produce a motor-car truck though Fieldingly mounted, is, carried more direct y by thewheels driven thereby, so that the relative movement; is comparatively slight and intricate mechanism to allow-for great relative move-' ment is thus unnecessary; y Anotherobject is to mount the car-body or body-supporting truck frame or bolster so that the usual'vibrations and movements of. such body and frame carrying it will be largel independent of the motor and will not a set the latter. I

A still further and impo provide, in connection with the above, novel driving mechanism whereby transmission of power from the motor to the wheels is se-- cured and all wheels of the truck driven, the s eed thereof being easi y regulated without a tering the speed of themotor. 1 The preferred formof construction is illustrated in the accompanying drawings, where- 1n 1 v v Figure 1 is a plan view of a railway-car motor-truck. F1 2 is aside elevation of the same. I 3 is a ongitudinal sectional view therethrough. Fig. 4 is a cross -sectional 3. Fig. 5 is a cross-sectional view on the e 5 5 of Fig. 3.

'Fig. 6 is a detail view showing oneuof the eccentrics for adjusting one of the frictionwhee1s.- Fig. 7 1s a slmjlar view of one of the eccentrics for adjusting the associated fric tion-wheel. Fi 8 is a cross-sectional view Fi .4. Fi 9, is a planview of the means for e ect' t e adjustment of theksfriction-wheels radia ly of the drivingdis Similar reference-numerals designate corresponding parts in all the figures of the rawlngs. 1 t

In the embodiment illustratedspaced axles 10 are em loyed,to which are secured the usual whee s 1-1,"all of Specification of Letters Patent. Application llled Au m 9, 1906. Serial No. 329.910.

V tion-wheels.

Cook and Stateof Illi-- rtant object is to which constitute trac These axles are their ends with journal-boxes 1,2 and mount,- ed thereon in any suitable manner is the main truck-frame. Thus'in the discldsed form of construction inner and'outer han erlinks 13 are suspended fronieach box, an plates 14, bridging the spaces of each set of hanger-links, cenistitute supports'for sp plo ed comprislng'bars 16, connected at their end by cross-bars, the side bars having capplates18, that'bea'r upon the s that said'-main-frame is from the journal-boxes; The above-described main vided between the side. bar's supporting orsub frame" comprisin soms 17, on which are mounted space longitudinally-disposed strin iers 1-9, that have free outer ends raised abdye the planes of the main portions .of said stringers. The said :ends' are connected byjtrusses 20. A- driving-motor the subframe and consists of ,a central longi- Q tudinally-dispose f'driving oricr'ank shaft 21, surroundedby a centralcasin 22, on oppo site sides of which extenda tor-cylinders 23, six beingj s'hown, though more of less 'ma be employed, as desired. The driving-sha 21 extends on op osite sides of the motor.v To. both ends 0 said shaft are fixed sets of spaced friction drivingdisks 24, the disks qfieach set having inner opposed frictionfaces 25. Two countershafts 26 are located between the drivingdisks 24 0f each set-transverse] y of the same, and each counter-shaft is journaled in a air of! eccentrics 27 the eccentrics of one s aft being disposed in opposite relation to those of the other shaft, as will be clear by reference to Figs; 5,j 6, and 7. The eccentrics for the outer ends of the shafts are journaled in the :depending portions of the trusses 20, while. the eccentrics for the inner endsof said shafts are journaled inhanger-bearings 28, through which the driving-shaft 21 passes, as clearly shown inFig; 5, the said hangers being suspended from the central ortions of the trusses 201 The outer-,ends oi the counter-shafts 26 are provided with s rocket-wheels 30, around which pass sproc etchains 31, that also pass'around' other sprocket-wheels 32,

frame is prowith a motor+ tlon-wheels 11. Sliclably mounted on the counter shafts 20, but suitably held against ratestsd Ian, 22, 1907.

s 15.1' A'mainiframe is cur-- nrality of mo connected to the axles 10 just inside the tracbetween the lower .ends' rings 15, so yielding y suspended" tranis mounted centrally of Ice ' accomplish these -mechanism is preferably employed: By re- 'so that the may be moved in unison.

rotation tlfereon, are friction-wheels 33, that operate between theadjacent driving-disks 24 and cooperate with their inner surfaces 25.

While the means for adjustin the frictionwheels-may be of any desired 0 aracter, the mechanism preferab y employed is as 'follows: The eccentrics for. each counter snaft are provided with depending arms 34, connected at their lower ends by cross-rods T31? e cross-rod 0 each set' at one-end of the motor is connected to the cross-rod of the corresponding set atlthe otherendof the motor by a link 36. By this arran ement it will be ap parent that .if-the links- 6 are moved longitudinally inl-unison by any suitable .means the counter-shafts 26 will be moved laterally in opposite directions, and thus each fric tion wheel will be brought into engagement with one of the friction-surfaces 25 of "the drivingdisks 24. Therefore ifthe driving-shaft 21 is in operation power will be transmitted through the driving-disks 24 and frictionwheels 33 to the counter-shafts and thence through the chain-gearin to the tractionwheels. These counter-s fts will always rotate in the same direction,-and inasmuch as the motor is thus connected'to all thewheels of the truck, or,in other words has aplurality. of connections with eachax'le, the greatest amount of power will-be transmitted without any undue strain'on any rilarticular art and all the wheels of the true will be iven in unison." v i The s eed of the traction-wheels 11 can of course e varied by movingjthe" frictionwheels 33 toward and from the shaft 21. To movements, the following fer-ring to Fig. Sit will be observed that the trusses 20 have depending and inturned flanges 37., forming guidewa s in whichare mounted reciprocate ac rack-bars are in mes ith pinions 39, lo cated between them d said' rack-bars carry on opposite sides 0 arms 40, provided with f okes/11 that engage in annular grooves 42, ormed in the'hubsof the friction-Wheels 33. One of the racks of each truss is extended beyond the other and meshes with a pinion 43, said pinion being connected to another pinion 44, located b'e neath thesame. 'An actuating bar 45, extending transversely of the bars 38 and longitudinally 'of the truck, has sliding bearin s 46 in the trusses and is provided with rae s meshing, with-the pinions 44. It will thus be evidentthat if the bar 45 is moved in one direction or the other the pinions 44 and 43 will be rotated, thus carrying the racks 38 in opposite directions and moving thefrietionwheels 33 toward and from the driving-shaft. A's alread shown, the above-described motor and riving-gears are carried by the sub or. motor-supporting frame. The. body This frame is a distinct .ported directl .while yielding y mounted the relative move- :ment will be comparatively small, 'so that connections between the friction-drive and traction wheels or axles is :necessary.

the main entirely inde and "sway 0 thus two features of great present case'namely, he supporting of the ms 38. These e pinions depending main frame supported thereon,

:carried'by themain frame, a motor mounted of the car is supported on another frame and bolster .arran ed thereover and designated as a wholes y'the reference-numeral 47. frame from the main and motor-su porting frames, but is yieldingly mounte thereon gand carried thereby, To this end telescoping; ide-casi s 48 are carried by the two ames an inclose 5 rings 49, interposeda between said frames.

he body-sup orting hjame furthermore has depending) 1pe estalsfiQ', which embrace and are slida e uponthe journal-boxes 12.

The advantages of this obvious. .The motor and gearing are supfrom the wheel-base and no intricate gear On the other hand, the bodysupporting frame-and bolster are mounted on ame and are capable of movement endent thereof, so that the jar the body will not materially affect the motor-frame, and consequently the motor and its associated parts. There are 'motor and drive-gearing, so that the movenient of the bod Will not disturb it in its re lation to the ax es and traction-wheels, and the arran ement and drive-gearing so that the full power will be transmitted to all the wheels of the truck =andv the weight of proerlydistributed upon the truck.

t em the foregoing ii; is thought-that the construction, operation, and many advantages of the herein-described invention will be a parent to those skilled in the art without rther description, and it will be underthe size, shape,

astood that various changes in proportion, and minor details of construction 'may be resorted to without de arting from the spirit or sacrificing any of the advanta es of the invention. T-Iavin thus fully described my invention, what I c aim as new, and desire to secure by Letters Patent, is

1 In a self-propelled car-truck, the combination=with traction-wheels, and axles, of a a subframe on: the subframe and having a driving-shaft project' beyond its op osite sides, a plurality of etion drive-dis s mounted on each :devices associated-with the disks and having .drivin connections with the adjacent shaft and w eel.

2. In a self-propelled car-truck, the com bina'tion with a main frame, .of axles, and

traction-wheels supporting the same, a bodysupporting frame yieldingly mounted .on the main frame, a subframe carried by the main construction will be importance in the the mechanism will be construction of said end of the shaft, and a plurality of friction.

frame, a motor arranged on the subframe and bination spaced'axles and their Wheel s, having a driving-shaft extending onboth of a motor-supportin fra-inel cari'ied by the" sides thereof, a pluralit of opposing disks axles and'prqecting geyona he 'outerrsides mounted, n each end oft edriving-shaftand tliereof, a motonmounted centrally of'jthe having inner friction-surfaces, 'a'plu i'ality of frame between the axles, motor inclu'd 7o; counter-shafts located between each setof ingadriving shaftthat "ittojects; beyond, opposinggidisks, a lurality of driving "con the'axles transverselythereofi andwplurality i. 'nections' 'etween t e counter-shafts and the of cylinders dispose 'oiiop osite'sids of-th'ei adjae' axle and wheels, friction-wheels motorshaft, sets ofspa'ceg disks slidabl 'mounted on the counter-shafts, and the drivin shaft on opposite s means for moving said counter-shafts latermotor an 7 having inner oppos ally and for movin' the wheels longitudinally faces, a plurality of counter sh" I i t t of the counter-shafts. between each set of disks and hast q fiction- 3. In a self-propelled car-truck,,the comwheels cooperatin withthe opposes friction bination with axles and traction wheels faces thereof, an driving connections lie-[8o mounted thereon, of journal-boxes for the tween the various counter-shafts ad-'- axles, hanger-links suspended from the jour jacent aides and Wheels. 1 nal-boxes, springs located in the hanger: 8. In a' self-propelled cartruck"';the' com links, a main frame mounted on the s rings, bination with spaced xles, and traction a sub or motor frame carried by sai main wheels, of a main frame yieldjngly supported 8;,-

or motofiframe, and including a drivingsitely-disposed friction-facegl-H-drivingks rtraction-wheelg'said gearing b 1 by the motor-supporting frame.

7 bination withs aced sets of spaced wheels, of tions of the subfranieflineans connecto ,I to a motor locate between the sets and, having the eccentrics for rotating the same, coun shaft on opposite sides of the motor, a-pluwheelsand the traction -'Wl1 ral ity of counter-shafts located betweenv the wheels slidably' mounted on f and connections between the counters'hafts -movmg said wheels a ing' a driving-s aft projecting beyond its opsubframe carried by t axles we h vin a shaft disposedtrans the subframe and having a shaft dis sa frame, springs mounted on the, maln frame, thereon, a motor sup'porting or subframe va body-supporting frame mounted on the carried by themain frame and including A latter-springs, pedestals carried by the motortrusses, a motor mounted on the subframe besupporting frame and slidably engaging the tween the trusses and having a driving shaft a journal-boxes, a motor mounted'on'the sub extending beyond its "op ositesides, 0 Po-1 p shaft extending, on opposite s des of sa d mounted. on each end of thetshaft on oppomotor, and gearing connecting the o posith site sides of the trusses, a;anger-hear ends of the driving-shaft to the a es and suspended from the central port on offleac eing carried truss and dis osed between ,edriving-diska gs 7 o positely disposed e'cc' tries "ournale'd in- I' l 4. In self-propelled car-truck, the comt e hanger -'beai'ings an int eend '01-? a driving-shaft projecting beyondits oppoter-shafts'ournaledin theeccentlicsand hav--1eq site sides, setsof spaced andopposed frictioning s [realist-wheels on; their quterj ends, I faced driving-disks mounted on the drivingsproc et-geai'ing between the sgrspmckea s, friction- 1 the counterhe friction r05 faces of the different sets of driving-disks and shafts, and 1cooperatiigs Wi havingfrictiomwheels'cooperatingtherewith, of'tliefdnfi fg'f k8 ,d wfi th,

and the adjacentlsets of traction whee s; 1 dri -shaf t. a v tg 5. In a selfrepelled car-truck, the com- 7 9. n a self-propelled'clzr-truck, the vcombination with out and rear sets of wheels, bination withtractionf heels, and axles, of'zr-io of a motor located between the sets and hava main fram eyieldin'gly'sup ported thereon, a

H he II r es to posite sidesj'disks secured to theshaft on mounted on the subframe, a separate frieopposite sides of the motor, a plurality of tion drive-gearing connection between the 7 separate counter-shaftsv disposed on each motorand' each of the wheels, and a bod 115' s1 e of'the motor and having friction-wheels supporting-frameyieldingly mounted 'on t e cooperating with the disks, and a drivin' mainframe f v connection between, each counter-shaft and 1.0. In a self-propelled'cantruck, the com- 1 one of the car-wheels. a v x binationwith tractlonewheels, axles, journal- 6. Ina self-propelled car-truck, the comboxes,- and main: truck-frame in which said 126 bination with spaced axles having wheels parts are mounted, a subframe arranged fixed theretq ofa motor located between the within the main frame a motor carried by verselyjthereof, riction, mechanism associ longitudinally of the truek,a friction riv& ated with the shaft and mate-den opposite gearing between the shaft and each ofth e r25 sides of the motor; each mechanism lncludwheels, and the bodyframe arranged above ing-counter-shafts havin a plurality of drivthe main 'fi'ame an subframe and having j in connections with 6851 adjacent axle and depend' pedestals wlnch embrace an 7 w r l de'bp i gf x-b xes. v

' 7- s lis ell d a -truck the 0% A -11- In 4 s *P P H led car-truck, the corn- 135 I binationwith traction-wheels, axles, journal-- bination"with traction-wheels, axles, jour Correction in Letters Patent No. 841533 nal boxes, and sprin and amain truck frame m whichsm k pa. '8 are mounted,

1 [man] :1 s'ubfi'am'e'meuntedon and carried by the main frame and arranged within the latter, friction drive-gearing carried by the subframe each end= and having chain-andsprocket oonnectionswith-wll the wheels, and a motor carried by the subfiame and connecting the said-Efriction-gearing.

In testimouythatll claim the foregoing as my own- I have heretq affixed my signature in the presence of twqfo'Iwa'ritnesses.-

V JAIWEQ K. COOHRAN.

Witnesses:

JonN SIGGERS, B; GfFos'rnn in Self-Propelled Gar-Trucks, an error appears the printed specification requiring correction, as follows: In line 125, page 2, the two wheel should read wheels {and that the said Letters Patentshould read this correction therein that the same may conform to the record of the ease in the Patent Oflice.

Signed and ,sealed this 5th day of February, A. 1)., 1907.

E. I. ALLEN, Commissioner of It is hereby'certified that in Letters Patent No. 841,933, granted January 22, 1907, upon the application of James K. Cochran, of Chicago,I11inois, for an improvement binationwith traction-wheels, axles, journal-- bination"with traction-wheels, axles, jour Correction in Letters Patent No. 841533 nal boxes, and sprin and amain truck frame m whichsm k pa. '8 are mounted,

1 [man] :1 s'ubfi'am'e'meuntedon and carried by the main frame and arranged within the latter, friction drive-gearing carried by the subframe each end= and having chain-andsprocket oonnectionswith-wll the wheels, and a motor carried by the subfiame and connecting the said-Efriction-gearing.

In testimouythatll claim the foregoing as my own- I have heretq affixed my signature in the presence of twqfo'Iwa'ritnesses.-

V JAIWEQ K. COOHRAN.

Witnesses:

JonN SIGGERS, B; GfFos'rnn in Self-Propelled Gar-Trucks, an error appears the printed specification requiring correction, as follows: In line 125, page 2, the two wheel should read wheels {and that the said Letters Patentshould read this correction therein that the same may conform to the record of the ease in the Patent Oflice.

Signed and ,sealed this 5th day of February, A. 1)., 1907.

E. I. ALLEN, Commissioner of It is hereby'certified that in Letters Patent No. 841,933, granted January 22, 1907, upon the application of James K. Cochran, of Chicago,I11inois, for an improvement Correction in Letters Patent No. 841,!

for an improvement specificatibn requiring should read wheels,-

F. I. ALLEN, Commissioner of 

